CVE-2026-34959
- Source
- https://cve.org/CVERecord?id=CVE-2026-34959
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34959.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-34959
- Aliases
-
- GHSA-8478-xrj3-h9c2
- Downstream
- Published
- 2026-08-25T01:29:57.683Z
- Modified
- 2026-08-28T11:30:52.622386292Z
- Severity
-
- 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N CVSS Calculator
- Summary
- Adminer before 5.5.0 Open Redirect via X-Forwarded-Prefix
- Details
-
Adminer 4.6.0 before 5.5.0 prepends the client-supplied X-Forwarded-Prefix header to $SERVER["REQUESTURI"] with no trusted-proxy check and no validation of the prefix value. An attacker can supply an absolute URL (e.g. X-Forwarded-Prefix: https://evil.example) that flows into Location redirect headers, the Set-Cookie path attribute, and self-referential links. This enables an authenticated open redirect after state-changing POSTs, unauthenticated control of the session cookie path attribute, and poisoning of self-referential links; CR/LF cannot be injected, so header splitting/XSS is not possible.
- Database specific
{ "cwe_ids": [ "CWE-20" ], "cna_assigner": "VulnCheck", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34959.json" }- References